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Gene Review

GLYPO  -  Average glycolytic potential

Sus scrofa

 
 
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High impact information on GLYPO

  • It was concluded that the oxidative capacity of mammalian myocardia was closely associated with resting heart rate, whereas the glycolytic potential of the myocardia was more uniform among the species [1].
  • Log-log plots (activity gm-1 vs body mass) display a positive slope indicating that the larger the animal the higher the glycolytic potential of its skeletal muscles [2].
  • Regression analyses revealed that blood lactate and glycolytic potential accounted for 52 and 48% of the variation in drip loss and L* value, respectively [3].
  • Association analyses of the BamHI marker for growth and meat quality traits in the reference family revealed significant association with marbling (P < 0.03), 10th rib back fat (P < 0.09) and total lipid percentage (P < 0.05), as well as with loin eye area (P < 0.04), average glycolytic potential (P < 0.03) and average lactate content (P < 0.04) [4].
  • Also assessed were carcass characteristics, initial and ultimate pH, L*a*b* values, drip loss percent, glycolytic potential (GP), and intramuscular lipid content, as well as the fatty acid profile of each muscle and adipose tissue [5].
 

Biological context of GLYPO

  • A DNA test was used to determine Halothane genotype, and longissimus glycolytic potential was used to predict the RN genotype [6].
  • In L muscle, the RN- allele led to a large increase in glycolytic potential (+3.5 phenotypic SD between homozygotes) and lightness (+.7 SD), and a decrease in ultimate pH, dry matter, and protein contents (-1.7 to -2 phenotypic SD for these three traits), with an almost completely dominant effect [7].
  • The GP-based classification did not correctly classify RN genotype in the present study, emphasizing the importance of the direct DNA analysis for estimation of gene frequency and effects [8].
  • Muscle samples were taken from the LM at 135 min and from the SSP at 160 min postmortem for determination of the glycolytic potential and rate of glycolysis [9].
 

Anatomical context of GLYPO

  • Backfat thickness at the last lumbar vertebra and 10th rib were lower (P < 0 .05) for High than for Low GP pigs [10].
  • Glycolytic potential (GP) was determined on live-animal biopsy samples and postmortem samples taken from the longissimus muscle, and free glucose concentration was measured on the exudate from the longissimus muscle taken postmortem [11].
 

Associations of GLYPO with chemical compounds

  • Correlations of GP and free glucose values with fresh pork quality measurements were moderate (r = 0.23 [P < 0.05] to -0.63 [P < 0.001]) [11].
  • Using a glycolytic potential of 180 micromol lactate/g of muscle as suggestive for the presence of the RN gene, four (10%) of the RSE samples were from RN carriers [12].
  • The impact of longissimus glycolytic potential and short-term feeding of magnesium sulfate heptahydrate prior to slaughter on carcass characteristics and pork quality [10].
  • Rendement Napole gene effects and a comparison of glycolytic potential and DNA genotyping for classification of Rendement Napole status in Hampshire-sired pigs [8].
  • A glycolytic potential [= 2 x (glucose + glycogen + glucose-6-phosphate) + lactate] of > 180 micromol lactate/g of meat was used as indicator for presence of the RN gene [12].
 

Other interactions of GLYPO

References

  1. Biochemical characteristics of mammalian myocardia. Blank, S., Chen, V., Hamilton, N., Salerno, T.A., Ianuzzo, C.D. J. Mol. Cell. Cardiol. (1989) [Pubmed]
  2. Scaling of oxidative and glycolytic enzymes in mammals. Emmett, B., Hochachka, P.W. Respiration physiology. (1981) [Pubmed]
  3. Preslaughter stress and muscle energy largely determine pork quality at two commercial processing plants. Hambrecht, E., Eissen, J.J., Nooijent, R.I., Ducro, B.J., Smits, C.H., den Hartog, L.A., Verstegen, M.W. J. Anim. Sci. (2004) [Pubmed]
  4. Characterization of an X-chromosome PCR-RFLP marker associated with fat deposition and growth in the pig. Gaboreanu, A.M., Grapes, L., Ramos, A.M., Kim, J.J., Rothschild, M.F. Anim. Genet. (2004) [Pubmed]
  5. Free-range rearing of pigs during the winter: adaptations in muscle fiber characteristics and effects on adipose tissue composition and meat quality traits. Bee, G., Guex, G., Herzog, W. J. Anim. Sci. (2004) [Pubmed]
  6. The effect of the Halothane and Rendement Napole genes on carcass and meat quality characteristics of pigs. Hamilton, D.N., Ellis, M., Miller, K.D., McKeith, F.K., Parrett, D.F. J. Anim. Sci. (2000) [Pubmed]
  7. Influence of the three RN genotypes on chemical composition, enzyme activities, and myofiber characteristics of porcine skeletal muscle. Lebret, B., Le Roy, P., Monin, G., Lefaucheur, L., Caritez, J.C., Talmant, A., Elsen, J.M., Sellier, P. J. Anim. Sci. (1999) [Pubmed]
  8. Rendement Napole gene effects and a comparison of glycolytic potential and DNA genotyping for classification of Rendement Napole status in Hampshire-sired pigs. Moeller, S.J., Baas, T.J., Leeds, T.D., Emnett, R.S., Irvin, K.M. J. Anim. Sci. (2003) [Pubmed]
  9. Preslaughter handling effects on pork quality and glycolytic potential in two muscles differing in fiber type composition. Hambrecht, E., Eissen, J.J., Newman, D.J., Smits, C.H., Verstegen, M.W., den Hartog, L.A. J. Anim. Sci. (2005) [Pubmed]
  10. The impact of longissimus glycolytic potential and short-term feeding of magnesium sulfate heptahydrate prior to slaughter on carcass characteristics and pork quality. Hamilton, D.N., Ellis, M., Hemann, M.D., McKeith, F.K., Miller, K.D., Purser, K.W. J. Anim. Sci. (2002) [Pubmed]
  11. Relationships between longissimus glycolytic potential and swine growth performance, carcass traits, and pork quality. Hamilton, D.N., Miller, K.D., Ellis, M., McKeith, F.K., Wilson, E.R. J. Anim. Sci. (2003) [Pubmed]
  12. Glycolytic potential of red, soft, exudative pork longissimus muscle. van Laack, R.L., Kauffman, R.G. J. Anim. Sci. (1999) [Pubmed]
  13. Correlations among selected pork quality traits. Huff-Lonergan, E., Baas, T.J., Malek, M., Dekkers, J.C., Prusa, K., Rothschild, M.F. J. Anim. Sci. (2002) [Pubmed]
 
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